Krupp Polysius Ag

Hans-Dieter Grudno

Ludger Lohnherr

Dietmar Holsiepe

Bernhard Zigan

The invention relates to apparatus for delivering material to part of a plant, for example to a crushing and grinding machine, in which the fines are separated out of the feed material passing through the material feed chamber by means of an air stream. In this way a substantial increase in the output of the part of the plant can be achieved.

Apparatus for crushing materials

Apparatus for heat treating fine-grain material, in particular in the production of cement, having a kiln from which waste gases are directed by a fan to a preheater for such material and then to dedusters via a main conduit and a bypass conduit. Between one of the dedusters and the pressure side of the fan extends a connecting conduit. Kiln gases selectively may be admitted to or blocked from the connecting conduit when desired.

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Beckum, Germany

Hans-Dieter Grudno